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- Watch this animation (http://openstaxcollege.org/l/stomach1) that depicts the structure of the stomach andhow this structure functions in the initiation of proteindigestion. This view of the stomach shows thecharacteristic rugae. What is the function of these rugae?Watch this animation (http://openstaxcollege.org/l/sintestine) that depicts the structure of the small intestine, and, in particular, the villi. Epithelial cells continue the digestion and absorption of nutrients and transport thesenutrients to the lymphatic and circulatory systems. In the small intestine, the products of food digestion are absorbed by different structures in the villi. Which structure absorbs and transports fats?On the histological preparation of the walls of the small intestine: there * are groups of cells at the bottom of the crypt, in the apical part of which there are large acidophilic secretory granules; the cytoplasm is basophilic. What are these cells? goblet cells. Columnar cell with a border. O Endocrine cells. Cells without border. Paneth cells.
- Describe how chief cells and parietal cells work together to ensure efficient protein digestion in the stomach.The small intestine can be divided into 3 regions: duodenum, jejunum, ileum. How does the unique structure of each region match its function?All the structures of the alimentary canal have 4 similar major histological tissues . Which of the following descriptions of the tissue layers contains innacurate information? A) The mucosa layer consits of a simple epithelium (responsible for absoprtion), a lamina proprioa (supports the epithelium) and muscularis mucosae (thats ivolved with peristalsis. B) The muscularis externa has 2 or 3 layers of smooth msulce and is involced with persistalsis C) The submucosa layer is a connective tissue layer that anchors the mucosa layer and contains many blood vessels, lyphatic vessels, and nerves D) The serosa layer is a connective tissue layer that tethers the alimnetary canal to the appropirate body cavitities. I believe that D is false but I am not certain
- List five types of cells that line the gastric pits of the stomach, the secretions of each of the cell types and the function of the secretions.Some of the intestinal epithelial cells, called goblet cells, contain small globules of mucus. Why are there cells in the small intestine that produce mucus?Which of the following cell types leads to a decrease in pH in the stomach? Schwann cells O Parietal cells Chief cells O Neck cells O Enterokinase cells
- What is the importance of goblet cells in intestinal epithelium? Differentiate the types of exocrine glands based on the manner by which their glandular cells release their secretory glands. Name atleast 3 exocrine glands of the digestive system, give the organ where they are found and classify each gland according to morphology and number of secretory units. Tabulate your answer.A general principle of physiology is that structure is a determinant of—and has coevolved with—function. One example highlighted in this chapter is the large surface area provided by the villous and microvillous structure of the cells lining the small intestineWhat different types of epithelial cells are found in the gastrointestinal tract and how do they differ between different parts?